Visual illusion demonstration device simulating hula hoop movements and demonstration method

Abstract

The invention relates to a visual illusion demonstration device simulating hula hoop movements, which consists of an experimental board, a mobile device, a special guide rail for the motion of the mobile device and a test board. The special guide rail is fixed on the experimental board; the mobile device is arranged on the guide rail and can move along the guide rail; and the test board is fixed on the mobile device. A pattern on the test board is formed by combining two circular rings consisting of emission lines, the circle centers of the two circular rings are coincide, and the inner diameter of the outer ring is a little larger than the outer diameter of the inner ring. When the demonstration device is used, the experimental board is fixed on the wall, a user stands at a place which is about 5 meters away from the experimental board, then the mobile device is started to perform circular motions on a background board along the circular guide rail; and when the moving speed of the mobile device reaches certain degree, the user can observe a phenomenon similar to the hula hoop movements.

Description

1. Technical field [0001] The invention relates to a demonstration device and a demonstration method for demonstrating optical visual effects, belonging to the technical field of experimental demonstration devices. 2. Background technology [0002] British visual scientist Al Seckel (Al Seckel) reported in "More Optical Illusions" that can produce an optical visual effect picture similar to hula hoop motion. The picture is a combination of two circular rings composed of radiating lines. The centers of the two rings coincide, and the inner diameter of the outer ring is slightly larger than the outer diameter of the inner ring. When the picture is moved in a circle with a larger radius, a phenomenon similar to hula hoop movement will be observed. The above-mentioned research results are very useful in demonstration experiments for college and middle school students, or in science popularization work in popular science publicity and education departments. However, on the one ...

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Problems solved by technology

However, on the one hand, the above results are the results of human observation, which may produce different observation results due to the different degrees of focus of the observer's eyes, the speed of rotating the picture, and the accuracy of the circular motion, or the results cannot be observed; On the one hand, only relying on people to do circular motions by holding pictures with their hands can only be observed for a short time, and long-term observation will cause fatigue in the arms

So far, there is no specialized equipment and method for observing

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